The Iowa Department of Education emailed a letter to school districts Wednesday.

The move comes after the Iowa Department of Education said last month that it will stop granting automatic waivers to school districts seeking to start classes earlier in the summer. Gov. Terry Branstad had sent a letter to Director Brad Buck asking that officials only grant a waiver if a school district demonstrates a "significant negative educational impact" of beginning classes on time, as required by law.

Some reasons not considered valid are wanting to complete the first semester before winter break, lining up with community college calendars and reducing the number of make-up snow days.

Rep. Kevin Koester mirroring school calendars with community colleges is one of the biggest reasons why district officials should be able to determine their own start dates.

"There are thousands of credits earned by that high school that are DMACC credits and to be inconguent on the schedule is not convenient. It's not impossible to work through it, it's not convenient," said Koester.

School districts that applied for an early start date waiver for the 2015-2016 school year will find out if it's been granted by April 15.